NEW SITE — FASTER TURNAROUND, MORE LABS. READ ON
Free peptide testing

Ordered Retatrutide from M-Peptides? Mail in a sample (US only) and let us test it for free.

Test my supply
66%
Finnrick rating
#353 of 378 Retatrutide vendors
4 of 9 classifiable tests passed
natural 44% · customers 4.8★ (5)
methodology · Purity focus
Finnrick analysis · Retatrutide

Repeated sub-99.5% purity misses and one -39% fill result keep this profile low despite clean identities and later passing purity/fill. The history is mixed, with intermittent batch gaps, so inspect the test rows behind the smoothed score.

methodology →
vendor intelligence report
Vendor Intelligence Report: M-Peptides

The full report traces a bracelet-themed WooCommerce order portal, two near-lookalike domains, and a stale contact trail that creates impersonation risk. It also maps Elsa’s public footprint, warehouse/regulatory exposure, and Janoshik-only recourse.

26 pages7 risk factors assessed13 Jun 2026
read the report
Peptides
#
Peptide
$/MG
Rating
N
1
Tirzepatide
$0.33
83%
14
2
Retatrutideselected
$0.80
66%
9
Contact channels
Rating trend
CUMULATIVE FINNRICK RATING
83%+65%+48%+30%+<30%21 Oct 2025: 76%23 Oct 2025: 71%23 Oct 2025: 68%29 Oct 2025: 69%7 Jan 2026: 67%11 Feb 2026: 70%18 Feb 2026: 66%18 Mar 2026: 68%22 Jun 2026: 65%29 Sep 2026: current 66%76%66%66%Oct 25Sep 26
Showing Retatrutide tests only
M-Peptides Retatrutide test history
COA-backed lab tests

About M-Peptides test results from Finnrick

M-Peptides is a peptide vendor tracked in Finnrick's independent testing dataset. This page compiles batch-level results across 2 peptides and 23 tests, including ratings, observed price signals, recent test dates, and correction history where available.

Finnrick ratings are calculated from published sample data using the selected rating standard. The default standard evaluates purity, dose accuracy, and label quality, then adjusts low-volume results so small sample counts do not appear more certain than the data supports.

The most visible M-Peptides peptides in this dataset are Retatrutide (9 tests) and Tirzepatide (14 tests). Use the peptide table above to compare the current Finnrick rating, price per mg, and sample volume for each peptide.

Recent tests and corrections are shown below when available. Samples may be acquired by Finnrick directly or submitted through Finnrick testing programs; the goal is to make safety and supply-chain evidence easier to evaluate than vendor marketing claims alone. This page currently lists 23 recent tests. It also includes 1 correction related to this vendor.

Corrections
2025-11-17
Finnrick data entry
Test results published from 31 Oct to 17 Nov 2025 under Peptide Sciences, but the sample was misidentified, and re-attributed to the correct vendor.
Free peptide testing

Ordered Retatrutide from M-Peptides? Mail in a sample (US only) and let us test it for free.

Test my supply